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A light ray is travelling at 1.33 x 108 m/s through a medium and hits the...

A light ray is travelling at 1.33 x 108 m/s through a medium and hits the interface of a second medium. The critical angle for total internal reflection is 50 degrees for this case. If the mediums were switched, and light was traveling now from the second medium to the first medium (same two mediums, however), what would be the incident angle needed, in degrees, with the respect to the normal, if the refracted angle is 33 degrees?

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